Bolster.



No. 703,993. Patented July s, |902. E. cAnLsoN & FERME, BOLSTER.

(Application filed Mar. 7, 1002.)

(No Modal.)

UNITED STATES PATENT OFFICE..

EDWARD CARLSON AND PERRIE, OF CHICAGO, ILLINOIS.

BOLSTER.

SPECIFICATION forming part of Letters Patent No. 703,993, dated July 8,1902.

Application iiled March 7, 1902. Serial No. 97,150. (No-model.)

T0 @ZZ whom it may concern,.-

Beit known that we, EDWARD CARLSON and JAMES PERRIE, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and usefnllmprovements in Bolsterspfwhich the following is a description.

Our invention relates to bolsters, both car and truck holsters as togeneral characteristics and to truck-holsters as to certainhereinafter-described special characteristics.

The object of such invention is to provide a bolster simple inconstruction, having lightness commensurate with great strength, andcapable of ready assembling and of convenient repairing, all of whichadvantages and points of utility will be apparent from the descriptionhereinafter given.

In the accompanying drawings, Figure l is a side elevation of a truckand car or body bolster with a portion thereof broken away to illustratecertain features of our invention; Fig. 2, aplan view of thetruck-bolster; Fig. 3, a perspective of one end ofthe lower or tensionmember of the truck-bolster, illustrating the manner of gibbing both weband ilanges of the channel-bars Vand-Fig. 4,a fragmentary view of abolster, illustrating a modied form of construction. f

Describing first the truck-bolster, 'the same comprises in general termsthe compression member, tension' member, side plates, and the centralsupport or post. The compression and tension members are made fromchannel-bars, which in the instance shown i-n Fig. 1 are arranged web toweb, with their flanges directed away from each other, while in Fig. 4Ethe flanges are directed in the same direction. The compression memberhas a web 1 and iianges 2, and the tension member has a web 3 andflanges 4, a suitable central support or post 'being arrangedbetweensaid members. Suitable side plates 6 are riveted or otherwisesecured along the sides of such members. The usual column-plates 7 `arealso riveted to the sides thereof'. The side plates 6 are desirable, butmight in some instances be dispensed with. By preference the webs of thecompression and tension members are brought together into contact for ashort distance near their ends, which are gibbed as to both their websand anges, whereby all lateral movement of one member on the other isprevented and the strain properly provided for. lfo this end in the formshown'in Fig. 1 each endof the web 3 of the tension member is upset-soas to have an upward ange 8 and downward-flange 9. The web 1 ofthecompression -member has a double-angled ange 10forming a recess toreceive the fiange 8. As clearly shown in Fig. 3, the lower corners ofthe anges are cut away at 2, so as to permit the end of the bar asto itsentire width, including flanges, tobe turned up in the form of theflange 10 and be folded into such cut-away portion and to receive theflange 8, extending full width of the tension member. The function ofthe depending flange 9 is to prevent lateral displacement of thespring-seat 11 for the usual springs 9, which seat bears on the underside of web 3 and has a flange or shoulder 13 snugly fitting the flange9. If desired, an end plate 14 may be secured to each end of thebolster.

Referring next to the car or body bolster, the same comprises acompression member made of channel-bar having a web 15 and flanges 16and a tension member, also made ot' channel-bar having a web 17 andanges 1S. The said members are also arranged Web to web, and the barsare gibbed as to both web and ange; but the ends here need but a singleflange 19, received by the double-angled iiange 2O on the other web. Itis obvious that the Webs 1 and 3 of the truck-bolster might be similarlyfianged-that is, that the flange 9 might be dispensed with, suchflange'being desirable, so as to furnish an abutment'or stop for thespring-seat 11.

In Fig. I is illust-rated a modified form of body-bolster, in which theflanges 21 and 22 of the upper and lower members or channelbars,respectively,ektend in the same direction-that is, downwardlyinstead ofin opposite directions, as shown in Fig. l-and such bars have the webs23 and 24, corresponding to the webs 17 and 15. (Shown in Fig. 1.)

The ends of the channel-bars aregibbed in the same manner as thosehereinbefore described. A

By reason of the construction hereinbefore described, particularly theend gibbing `as to both the web and ange, we provide a practical andserviceable bolster possessing great strength, and, moreover, suchbolster is sim.- ple in its construction and easy of assembling andrepair.

We claiml. A bolsterhaving its compression and tension members formed oftwo bars or plates, one of which is provided with end flanges and theother one of which is provided at its ends with double-angled flangesengaging said rstnamed flanges; substantially as described.

2. A bolster having its compression and tension members formed ofchannel-bars gibbed at their 'meeting ends as to both their Webs andflanges; substantially as described.

3. A bolster having its compression and tension members formed ofchannel-bars arranged web to web with their flanges outwardly directed,said members being gibbed as to their ends.

4. Abolsterhavingits compression and tension members arranged web toweb, the ends of said members being gibbed; substantially as described.

5. Abolsterhavingitscompressionandtension members arranged web to webwith their meeting ends gibbedand plates secured to the sides of saidmembers; substantially as described.

G. Abolsterhavingts compression and tension members arranged web to web,the web of one member having a fiange and the web of' the other memberhaving adouble-angled ange receiving the first-mentioned fiange;substantially as described.

7. A truck-bolster having compression and tension members gibbedtogether' at their ends, spring-seats, and means on the ends of eachtension member to hold said seats in place; substantially as described.

f 8. A truck-bolster having its compression and tension members gibbedtogether at their ends, spring-seats, and a flange on the ends of eachtension member to hold said seats in place; substantially as described.

9. A truck-bolster having a compression and a tension member formed ofchannelbars, and` spring-seats, the end of the Web of the tension memberbeing upset to form a flange both above and below the web, the end ofthe other web bearing against the upper flange whereby the said membersare gibbed together at their ends and the spring-seats bearing againstthe lower flange and held in place thereby; substantially as described.

10. A truck-bolster having a compression and a tension member, andspring-seats, the end of the web of the tension member being upset toform a liange both above and below the web,the end of the web having adoubleangled flange receiving the upper flange of the tension member andthe spring-seats bearing against the lower ange; substantially asdescribed.

` 11. A truck-bolster comprising a compression member having a web l andflanges 2, a tension member having a web 3 and flanges 4, the membersbeing arranged web to web, a central support, the web 3 being upset toform upper and lower flanges 8 and 9 and the web 1 having adouble-angled flange 10 t0 fit the flange 8, and a spring-seat 11bearing against the under side of the web and having a fiange 13 fittingagainst the flange 9; substantially as described.

EDWARD CARLSON. JAMES PERRIE.

Witnesses:

S. E. HIBBEN, Lonrs B. ERWIN.V

